I'm not sure I should be posting this, but as someone whose major PTSD & depression (among other things) has caused her endless grief in her relationship, I could really relate to a lot of what you said about your girlfriend. She sounds scared. I think some of it sounds like she's worried you won't be coming back. If she has abandonment issues, then that just ups the ante on them even more. I think you are doing the right thing by trying to stay in touch with her as much as you possibly can, but like Perna said, don't push her or press on the relationship issues. You can sort that out later, just keep being supportive and keeping in touch with her a lot like you are. It's frustrating and exhausting to put up with someone who's depressed & has PTSD (I know I have driven my boyfriend absolutely mad), but it's also just as frustrating if not more, for us to be so messed up. It's incredibly exhausting and sheer torture really. She is probably sorting through a ton of stuff right now and feeling overwhelmed. The relationship is probably not something she's ready to handle at the moment. Keep doing what you're doing but give her a little space to work on her own stuff too. I hope everything works out well for you guys.